NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-68
native system library
native system library. Synonym for implicit library.
$NCP. The process name of the network control process.
NEC. National Electrical Code.
net list. The definition of integrated-circuit signal (other than a power or clock signal)
interconnections.
network. Two or more computer systems (nodes) connected so that they can exchange
information and share resources. See also Expand network, wide area network (WAN),
and local area network (LAN).
Network Access Method (NAM). The interface through which an Expand-over-ServerNet
line-handler process communicates with the ServerNet cluster monitor process
(SNETMON).
network control process. A process pair, named $NCP, that runs in each system of an
Expand network. $NCP establishes and terminates system-to-system connections,
maintains network-related system tables (including the network routing table, NRT),
calculates the most efficient way to transmit data to other systems in the network,
monitors and logs changes in the status of the network and its systems, informs
$NCPs at neighbor systems of changes in line or Expand line-handler process status,
and aborts pending requests when all paths go down. See also network routing table
(NRT).
Network Information Service (NIS). A distributed name service (formerly known as Yellow
Pages) developed by Sun Microsystems. See also Domain Name System (DNS).
network routing table (NRT). A table that resides in each processor in each system in a
network. The NRT associates each destination system with the logical device (LDEV)
number of the best-path route Expand line-handler process to use to send messages
to that system. See also network control process.
network topology. The physical layout of components that define a system, a local area
network (LAN), or a wide area network (WAN).
neutral. (1) The conductor used as the primary return for current during normal operation of
electrical equipment. (2) The junction of the legs in a wye circuit. See also wye.
(3) Generally at ground potential.
NIS. See Network Information Service (NIS).
nld utility. A utility that collects, links, and modifies code and data blocks from one or more
object files to produce a target TNS/R native object file. See also ld utility.
NNA. See node-numbering agent (NNA).
NNA PIC. See node-numbering agent (NNA) plug-in card (PIC).